Dr. Robert Bussard talks about how to change the world and it only takes three minutes.
For a deeper look at this technology:
Bussard Fusion Reactor
The video at this one is deep on physics and lasts an hour and a half, however the last 30 minutes has the implications. The three minute video is excerpted from this longer version:
Easy Low Cost No Radiation Fusion
IEC Fusion Newsgroup
IEC Fusion Technology